Overall Rating Gold
Overall Score 74.78
Liaison Jenny McNamara
Submission Date March 5, 2021

STARS v2.2

Portland State University
OP-21: Water Use

Status Score Responsible Party
Complete 4.00 / 4.00 Amanda Wolf
Program + Assessment Coordinator
Campus Sustainability Office
"---" indicates that no data was submitted for this field

Level of ”Physical Risk Quantity” for the institution’s main campus as indicated by the World Resources Institute Aqueduct Water Risk Atlas:
Low to Medium

Total water withdrawal (potable and non-potable combined):
Performance Year Baseline Year
Total water withdrawal 80,585,988 Gallons 157,204,613 Gallons

Potable water use:
Performance Year Baseline Year
Potable water use 78,956,100 Gallons 157,204,613 Gallons

Start and end dates of the performance year and baseline year (or three-year periods):
Start Date End Date
Performance Period July 1, 2018 June 30, 2019
Baseline Period July 1, 2006 June 30, 2007

A brief description of when and why the water use baseline was adopted:

Earliest year with data.


Figures needed to determine "Weighted Campus Users":
Performance Year Baseline Year
Number of students resident on-site 2,192 1,000
Number of employees resident on-site 9 30
Number of other individuals resident on-site 0 0
Total full-time equivalent student enrollment 20,083 15,639
Full-time equivalent of employees 2,710 2,098
Full-time equivalent of students enrolled exclusively in distance education 2,112 0
Weighted campus users 16,061 13,560.25

Potable water use per weighted campus user:
Performance Year Baseline Year
Potable water use per weighted campus user 4,916.01 Gallons 11,593.05 Gallons

Percentage reduction in potable water use per weighted campus user from baseline:
57.60

Gross floor area of building space:
Performance Year Baseline Year
Gross floor area 5,228,713 Gross Square Feet 4,761,979 Gross Square Feet

Potable water use per unit of floor area:
Performance Year Baseline Year
Potable water use per unit of floor area 15.10 Gallons / GSF 33.01 Gallons / GSF

Percentage reduction in potable water use per unit of floor area from baseline:
54.26

Area of vegetated grounds:
Performance Year Baseline Year
Vegetated grounds 15.18 Acres 14.18 Acres

Total water withdrawal per unit of vegetated grounds:
Performance Year Baseline Year
Total water withdrawal per unit of vegetated grounds 5,308,694.86 Gallons / Acre 11,086,361.99 Gallons / Acre

Percentage reduction in total water withdrawal per unit of vegetated grounds from baseline:
52.12

A brief description of the institution's water-related behavior change initiatives:

EcoReps and Residential Outreach:
EcoRep projects have included signage regarding water use behavior in dorms/apartments and laundry rooms.

Climate Champions Program:
Question specifically asking about water conservation, providing staff with information and resources to help encourage water conservation practices.


A brief description of the institution's water recovery and reuse initiatives:

Academic and Student Recreation Center (LEED Gold)*
Rain is harvested on the 5th floor and is collected in a holding tank on the first floor for use flushing toilets.

Engineering Building Hydrology Lab
Portland State University's Engineering Building, is equipped with a rainwater harvesting system that uses Oregon's average 38"" of annual rainfall to supplement the building's overall water demand. The system captures rain from the rooftop and diverts a portion through the rainwater harvesting system located in the hydrology lab on the 2nd floor. The water is stored in a 1000 gallon storage tank, filtered through carbon, and undergoes UV sterilization before being pumped to toilets and urinals on the 1st floor. In addition to conserving flush water and reducing rainwater runoff, this system also contributes to the university's engineering curriculum. Students use the rainwater harvesting system to study water usage rates, savings, filtration methods, and other aspects in an effort to advance this technology.

Stephen Epler Hall (LEED Silver)
Rainwater harvesting system to reduce need for potable water.

https://www.pdx.edu/sustainability/water


A brief description of the institution's initiatives to replace plumbing fixtures, fittings, appliances, equipment, and systems with water-efficient alternatives:

Green Revolving Fund Projects:
-Low flow fixture and installed aerators on sinks to reduce water usage in Millar Library, East Hall, and Cramer Hall


Website URL where information about the institution’s water conservation and efficiency efforts is available:
Additional documentation to support the submission:
---

Data not updated for FY20 due to CoVid. There are discrepancies between the PRE-5 numbers (which were updated for FY20) and OP-21 numbers, as all quantitative data for this credit was not updated for FY20 as CoVid erroneously affected our data and does not represent a sustained change.

The information presented here is self-reported. While AASHE staff review portions of all STARS reports and institutions are welcome to seek additional forms of review, the data in STARS reports are not verified by AASHE. If you believe any of this information is erroneous or inconsistent with credit criteria, please review the process for inquiring about the information reported by an institution and complete the Data Inquiry Form.